To add here, I just started experiencing the same (or very similar) issue on a X1 Carbon 9th Gen -- but when suspending rather than trying to power off.
Closing the lid would appear to put the machine into suspend but: (1) it still runs --> gets hot in a bag --> eventually powers off due to overheat (occurred several times over a period of a week) (2) lid open and touchpad movement would not reawaken the machine (which they did before) In my case it started with an update to `linux-image-5.14.0-1027-oem` and persisted in 1029 after that. Reverting to `linux- image-5.14.0-1024-oem` and booting that kernel removes the issue. apport-bug output attached ** Attachment added: "apport-bug-output.txt" https://bugs.launchpad.net/ubuntu/+source/linux-oem-5.10/+bug/1940665/+attachment/5573564/+files/apport-bug-output.txt -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem-5.10 in Ubuntu. https://bugs.launchpad.net/bugs/1940665 Title: Lenovo Carbon X1 9th gen no longer powers off Status in linux-oem-5.10 package in Ubuntu: Confirmed Bug description: Ubuntu 20.04.3 LTS linux-oem-5.10: 5.10.0-1044.46 Power off system, either through GUI or by shutdown -P now Expected result: System powers completely off What happens: System seems to be powering completely off. Screen goes black, but computer is still running, getting hot and using battery. Have to press power button for 4 seconds to power completely off. Solution so far: Use linux-generic-something To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-oem-5.10/+bug/1940665/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
